Blastfurnace slag, expanded clay, broken brick and steel shot may be used where appropriate.
炉矿渣，陶粒，碎砖和钢丸也可在适当的地方使用。
The lack of fine fractions in the expanded clay necessitates the addition of other aggregates.
膨胀性粘土缺乏细料部分，故必须添加其它骨料。
The minerogenetic series of the Shanxi Formation mainly includes coal beds, followed by expanded clay and siderite.
山西组成矿系列主要有煤，其次是膨胀粘土矿、菱铁矿。
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